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A124292 as a simple table

na(n)
11
21
32
46
521
678
7297
81143
94419
1017118
1166366
12257391
13998406
143873015
1515024609
1658285737
17226111986
18877174110
193402893997
2013201132950
2151212274057
22198672129783
23770725711035
242989941920334
2511599136512038
2644997518922327
27174562710686622

[1,1,2,6,21,78,297,1143,4419,17118,66366,257391,
 998406,3873015,15024609,58285737,226111986,
 877174110,3402893997,13201132950,51212274057,
 198672129783,770725711035,2989941920334,
 11599136512038,44997518922327,174562710686622]